<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        html,
        body {
            margin: 0;
            padding: 0;
            height: 100%;
            width: 100%;
            /* filter: grayscale(1); */
            background: brown;
        }

        .flex:first-child {
            padding-top: 150px;
        }

        .flex {
            display: flex;
        }
        .square {
            width: 100px;
            height: 100px;
            /* margin: 50px; */
            /* flex: 1; */
        }

        .rect {
            width: 100px;
            height: 100px;
            /* flex: 2; */
        }

        .road {
            background: brown;

        }

        .green {
            background: #8bc34a;
        }
    </style>
</head>

<body>
    <div class="flex row-1">
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="square green"></div>
        <div class="square green"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="square green"></div>
        <div class="square green"></div>
        <div class="square green"></div>
        <div class="rect road"></div>
        <div class="square green"></div>
        <div class="square green"></div>
        <div class="square green"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
    </div>
    <div class="flex row-2">
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="square green"></div>
        <div class="rect road"></div>
        <div class="square green"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="square green"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="square green"></div>
        <div class="rect road"></div>
        <div class="square green"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
    </div>
    <div class="flex row-3">
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="square green"></div>
        <div class="rect road"></div>
        <div class="square green"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="square green"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="square green"></div>
        <div class="square green"></div>
        <div class="square green"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
    </div>
    <div class="flex row-4">
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="square green"></div>
        <div class="square green"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="square green"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="square green"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>

    </div>
    <div class="flex row-5">
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="square green"></div>
        <div class="rect road"></div>
        <div class="square green"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="square green"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="square green"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
    </div>
    <div class="flex row-6">
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="square green"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="square green"></div>
        <div class="rect road"></div>
        <div class="square green"></div>
        <div class="square green"></div>
        <div class="square green"></div>
        <div class="rect road"></div>
        <div class="square green"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
        <div class="rect road"></div>
        
    </div>
</body>

</html>